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2026-08-12 - 11:23
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Wed Aug 12, 2026 01:01:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
703899216208,6cyclictest3535-21qemu-system-x8623:50:2120
703899216208,6cyclictest3535-21qemu-system-x8623:50:2120
703899216208,6cyclictest3535-21qemu-system-x8623:50:2120
703899208190,11cyclictest2447-21CPU20
703899208190,11cyclictest2447-21CPU20
700699205182,7cyclictest0-21swapper/022:25:380
700699205182,7cyclictest0-21swapper/022:25:380
703899202194,6cyclictest0-21swapper/2700:11:0020
703899202194,6cyclictest0-21swapper/2700:11:0020
704299200196,2cyclictest0-21swapper/3019:35:0124
704299200196,2cyclictest0-21swapper/3019:35:0124
703899200186,6cyclictest0-21swapper/2722:15:3420
703899200186,6cyclictest0-21swapper/2722:15:3320
703899200186,6cyclictest0-21swapper/2722:15:3320
703899200185,7cyclictest0-21swapper/2722:07:3220
703899200185,7cyclictest0-21swapper/2722:07:3220
703899200185,7cyclictest0-21swapper/2722:07:3220
702099200183,9cyclictest0-21swapper/1122:47:413
702099200183,9cyclictest0-21swapper/1122:47:413
702099200183,9cyclictest0-21swapper/1122:47:413
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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